section L

Question 1

Geomorphology

Answer 1

processes shaping earth’s surface and what they produce

Question 2

Denudation

Answer 2

lowering of continental surfaces
-weathering- break down of rocks
-mass wasting - gravity
-erosion- transportation

Question 3

weathering

Answer 3

destroyed bedrock breaking into smaller and smaller pieces

Question 4

joints

Answer 4

cracks in rocks

can effect the access of water or oxygen

Question 5

physical weathering dominates during…

Answer 5

colder/dry climate

Question 6

chemical weathering dominates during

Answer 6

warmer wetter climates

Question 7

differential weathering

Answer 7

some rocks are more resistant to weathering and thrive in different temperatures

Question 8

physical/mechanical

Answer 8

physical deisintegration of rock materal without any change to chemical configuration

Question 9

salt wedging

Answer 9

growth of salt crystals prying grains fo rock apart (creating holes in rock)
common in dry climates

Question 10

exfoliation

Answer 10

curved crack develop in bed rock, when pressure is removes, layers peel of bedrock

Question 11

chemical weathering

Answer 11

chemical alteration by exposed bedrock in surface area
-humid environments

Question 12

most significant chemical weathering processes

Answer 12

1- hydrolysis
2- oxidation
3- carbonation

Question 13

hydrolysis

Answer 13

reacting with water, loosening a minerals chemical bond and produces a different mineral

Question 14

spherodial weathering

Answer 14

results from hydrolysis that rounds out edges of rocks

Question 15

oxidation example

Answer 15

example: iron reacts with oxygen and creates rusting

Question 16

dissolution

Answer 16

solid, like rock or mineral, breaks down and mixes into a liquid, usually water
ex. limestone breaking down and becoming part of the water

Question 17

biological weathering

Answer 17

plants and animals alter rocks

Question 18

colluvium

Answer 18

soils or rock fragments depositied at the bottom of a slope

Question 19

mass wasting

Answer 19

downhill movement of soil and bedrock uner the influence of gravity

Question 20

angle of repose

Answer 20

steepest angle without downslop transfer
-courser materials has a steeper angle of repose

Question 21

rock fall

Answer 21

rapidly dropping material from cliffs and other steep slopes
causes by ice ment

Question 22

talus vs debris rock fall

Answer 22

talus- rock accumulating evening along the mountain wall

debris- big cone shaped heaps of rock

Question 23

landslides

Answer 23

triggered by rain
add weight to already overloaded slopes

Question 24

slump

Answer 24

collapses and rotates outward
creating cresent shaped scarp visible at the top
LOOKS LIKE SERIES OF STEPS

Question 25

soil creep

Answer 25

gradual downhill movement slowest movement -by freeze thaw and wet dry conditions

Question 26

solifluxion

Answer 26

slow movement of water saturated material that occurs in permenently frozen ground SAG DOWNHILL

Question 27

Flows

Answer 27

carrying a mix of water, mud, and rocks down slopes